Vibrating device



All@ 16 1932 R. G. RICHARDSON 1,872,341

VIBRATING DEVICE Original Filed Jan. 10. 1924 u F1 :l

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Patented Aug. 16, Y1932 @Bobigny dymcnnanson, por CHICAGO, ILLINoIs l p v,.Iliuuizillney DEVICE zonginai application me@ Japuary1a-i924jsea1No.685,344. Divided and this application linea July i,

f '11929. serial No. 975,011.`

vMy invention relates in general to vibrat .ing devices, and isk especially applicable to vibrating screens, valthough its use is not so limitedgand the -'object is toA provide anarrangementand means forL utilizing the gyroscopic .couples generated by yvibrating the axis of rotation of a heawfily wheel or gyroscope, thereby producing 'a powerful and elic'ientfvibrating device. This application is a i' division of application v"serial No. 685,344, filed January 10, 1924, now patent No. 1,726,192, in which the invention referred to in the foregoing is described and claimed. In this divisional application, a n special adaptation of my invention is described, according to which a gyroscopic device is eniployed in connection with apparatus having a primary movement in order to impart to such apparatus a translated secondary movement.

One embodiment of my invention, in which the same is applied to a vibrating screen of the well-known type used for screening or grading sand, gravel, ore, and like material, is shown in the accompanying drawing, wherein Fig. 1 shows a top view of a equipped with the invention; Y

Fig. 2V shows a side view of the same screen screen Referring to Figs. 1 and 2, the screen itself may bc of any approved type. As shown herein it comprises a rectangular wooden frame about 8 ft. over all 1n length, and 2 ft. in width, with an inner frame of square strips on which a sheet metal or wire mesh screen is stretched and held by staples, cleats, or any suitable means. The method of construction is suiiiciently indicated in the drawing, and since it is well understood by persons familiar with screens, no further consideration will be necessary on this phase of the matter.

The means `for supporting the screen will now be explained. The sides 2 and 3 of the frame are attached at opposite ends to the cross pieces 4 and 5, which support thev weight of the frame. The cross pieces 4 and 5 are in turn supported by` means of springs on cross pieces 6 and 7 respectively.

The latter Vmay form part of some .other 1nachine,or may be supported in any prefferred manner, `depending yonthe circumstances. As shown two heavy sill pieces of 2 X 6 inch timber are set 4on edge vandthe lowerr cross'piece 7 lits in a mortise about a foot from the left end. .Atv 4the right the cross lpiece 6 is supported by twouprights, one of vwhich is indicated-by reference char acter 10, at such .ai height that the screen will beinclined at anrangle .of about 30 from the horizontal. v v Y Y,

The springs which support .the ycross pieces 4and 5 are four in number and are indicated :by reference characters 11 to. 14, inclusive. These springs .evidently constitute aY loose -or fexible support for the frame-of the screen,

onwhich it is free to vibrate.

The primary mechanism for causing. the screen, to vibrate Ymay/now be considered. This comprises a driven-shaft 50 supported onlbearings 517and .52, which in turnare l supported .on frame members 20and 2l.; and apai-r of connecting rods or pitinen 53 and 54 suitably connected to the shaft 50- andthe Vsides .of the screenframe.V It will bel evident that `rotation of theshaft'50 will causea reciprocating. movement ,of the screen.

1' rFhelsecondary lactuating apparatus may now be considered.V -This `comprises a heavy ily wheel or gyroscope 40 and sha-ft 41supportedA on self-aligning ball bearings 42 and 43. Bearing 42 yis rigidly.V secured to the frame of the -screenby means of a member 44 and the two cross Apieces 45 and 46. The otherbearing,A bearing 43, is secured to .the upper .end lof ,a rigid member 70, `attached to members 9k and 2O as shown. l

The gyrofscope shaftis rotated by va pulley wheel 54 vand belt 55, with a smallmotor (noty shown). The ,shaft 50 .mayalso be belt driven, lbut preferably at a lower speed.

` The operation is as follows :v vRotation of the, shaft 50, vas heretoforementioned, partsa reciprocat-ing'movement vto thek screen. The direction of the forces applied tothe screen are such as to vibrate it in a substan-` tially' horizontal plane. This movement of the screen may be termed the primary movey nient. #The rsecondary movement 'of the 1m screen is produced by the gyroscope 40 as a result of the precession of its axis or shaft caused by the primary movement. In brief, vibrations of the screen in a horizontal plane will cause the screen bearing of the gyroscope to vibrate, and the gyroscope, reacting against the fixed bearing '43, will setup secondary Vibrations in the screen in avertical plane. The path actually followed by the" screen in its movement,therefore,-will-be the resultant path which is determined by I the horizontal and vertical comporientsf' Numerous Vmodiiications are possible, Yand l I do not therefore wish to be limitedto the l constructions described herein, but desire to include and have protected byLetters Patent all forms of my invention which come fairlyv within the scope of Y the `appended 'brating' said frame primarily,

claims. Y v

VVhat is claimed is:V f i. l. In combination, a frame,iinearns for viand'means for vibrating said frame secondarily, said second means comprising a gyroscope, a bearin lfor the shaft ofA said gyroscope supporte independent of said frame, and va` second bear-v ing precession to move said body in a different plane.

6. In combination, a movable body, means for moving said body, a gyroscope, means connecting said body and said gyroscope whereby movement of the body will cause precession of the gyroscope, and a'second body against which said gyroscope reacts during precession to apply a force to said first body through said-connecting means and change the direction of movement of said `7, In combination, a` movable body, means applying'a force to said'bodytending to move it in a given direction, a gyroscope supportedionsaid bodyy and arranged' tolprecess responsive to said movement, a second body, and meanswhereby said gyroscope reacts against said second body during precession and applies aforce to said iirst body which changes. the direction of movement thereof.k v A j I I In witnessl whereof, I hereunto subscribe my name this 28th day of J une, A.' D. 1929,.- -RODNEY RICHARDSON.

ing for said shaft supported on said frame f 2. The combination, with a movable appa- -ratus, of means responsive to movement of said apparatus and Lmeans Vfor moving the same in one direction forwmoving the same in another direction, ksaid means comprising 1 agyroscope the shaft of which has one end connected to said apparatus, together with a fixed youtside support for'tlie other end of the shaft. a Y

3. The combination, vwith anrapparatus i having a reciprocating movement, of .means for giving said apparatus an auxiliarygr'ecipf rocating `vmovement in another plane, :said means comprising a gyroscope, a bearingfor one end of the gyroscope shaft connected to said apparatus so as to move therewith, and abearing. for theV other-end Vof saidshaft connected to a rigid outside support, so that by reacting against said support 'the' said gyros'cope produces the auxiliaryreciprocating movement as set' forth. 4i Y 4. In combination, a movable body means for moving said body, a gyroscope, a connection between said -body and gyroscope whereby movement' of the body in `one plane will cause precession of the gyroscope, av second body, and a connection between saids'ec-l ond body andsaid gyroscope to enable the gyroscope to cause movement of the said first body in a different plane by reaction against said second body. y Y.

5.V In combination, a bodyimovable in two planes, means for'moving said body in one plane, a. gyroscope arranged 'to precess re-Y sponsive to movement ofsaid body in said one pla-ne, and an outside support for said gyroscope against whic'hthe, same 4reacts dur-V 

